Stamp .deb packages with the commit date. (#438)
Stamp .deb packages with the commit date. (#438)

To provide .deb packages with increasing versions from main, this patch
updates the version on the package being built to include a suffix
with the date.
libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl